Deactivate Windows 8 driver signature

Setting charm > „On/Off“ > Hold down the shift key and press
click on "Restart" with the mouse

or

Settings charms > „Change PC settings“ > „General“ > "PC settings" > "General" > "PC settings".
"Extended start"

then

"Troubleshooting" > "Advanced options" > "Startup settings"

The Conditional PC restarts and displays a menu KOMBAT and press the 7 button.
("Disable driver signature enforcement")

That's it, now you can also buy unsigned jerseys Install the driver.